CN105452967B - Image processing system - Google Patents
Image processing system Download PDFInfo
- Publication number
- CN105452967B CN105452967B CN201580000392.4A CN201580000392A CN105452967B CN 105452967 B CN105452967 B CN 105452967B CN 201580000392 A CN201580000392 A CN 201580000392A CN 105452967 B CN105452967 B CN 105452967B
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- Prior art keywords
- image
- photoreceptor
- ink powder
- polarity
- magnetic drum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 108091008695 photoreceptors Proteins 0.000 claims abstract description 80
- 239000000843 powder Substances 0.000 claims abstract description 67
- 238000004140 cleaning Methods 0.000 claims abstract description 38
- 239000002245 particle Substances 0.000 claims abstract description 11
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 7
- 238000005498 polishing Methods 0.000 claims abstract description 7
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 8
- 238000004064 recycling Methods 0.000 description 11
- 238000007639 printing Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 6
- 238000010023 transfer printing Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000013536 elastomeric material Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
- G03G15/0142—Structure of complete machines
- G03G15/0178—Structure of complete machines using more than one reusable electrographic recording member, e.g. one for every monocolour image
- G03G15/0189—Structure of complete machines using more than one reusable electrographic recording member, e.g. one for every monocolour image primary transfer to an intermediate transfer belt
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1665—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1605—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0094—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge fatigue treatment of the photoconductor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1665—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat
- G03G15/167—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat at least one of the recording member or the transfer member being rotatable during the transfer
- G03G15/1675—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat at least one of the recording member or the transfer member being rotatable during the transfer with means for controlling the bias applied in the transfer nip
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0011—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a blade; Details of cleaning blades, e.g. blade shape, layer forming
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0058—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a roller or a polygonal rotating cleaning member; Details thereof, e.g. surface structure
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/007—Arrangement or disposition of parts of the cleaning unit
- G03G21/0076—Plural or sequential cleaning devices
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/14—Electronic sequencing control
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00535—Stable handling of copy medium
- G03G2215/00556—Control of copy medium feeding
- G03G2215/00569—Calibration, test runs, test prints
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cleaning In Electrography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
The present invention provides a kind of image processing system, by the way that the ratio of the metallic recycled in ink powder is maintained prescribed limit, to suppress the insulation breakdown of the pollution of Charging system and photoreceptor.Image processing system includes：Multiple photoreceptor magnetic drums（1）；With each photoreceptor magnetic drum（1）Contact and make its powered Charging system（4）；The ink powder comprising the i.e. metallic of polishing particles is set to adhere to the developing apparatus of image development（21）；And from photoreceptor magnetic drum（1）The surface cleaning device that removes residual toner（3）, which will be formed in photoreceptor magnetic drum（1）On the ink powder image of each color overlap intermediate transfer successively and bring to form coloured image, there is 1 transfer bias control portion（53）, the average lettering rate of each color of its regulation number of pages before, by photoreceptor magnetic drum（1）On image formation when beyond 1 transfer bias switch to it is identical or opposite with the powered polarity of ink powder.
Description
Technical field
The present invention relates to for the image processing system such as duplicator, printer, facsimile machine.
Background technology
In the image processing system of full color formula, with yellow（Y）, reddish violet（M）, blue-green（C）And black（BK）
Each color distinguish on the side face of corresponding multiple photoreceptor magnetic drums, electric sub-image is formed using laser scan unit, by each
Color toner（toner）To generate the ink powder image of each color respectively.
In the ink powder image of each color that the side face of each photoreceptor magnetic drum is generated, overlapping be transferred to constantly is transported successively
Capable intermediate transfer belt, the thus combined color image on intermediate transfer band.Then, will be in the intermediate transfer belt using transfer roll
The coloured image of upper synthesis is transferred to the sheet material by being formed with paper etc., afterwards, is pressurizeed and is heated using fixing device, so that
Form coloured image.The ink powder for not remaining in photosensitive surface by 1 transfer section transfer is recycled by the cleaning device of photoreceptor,
The ink powder of recycling is attached to grinding roller surface, so as to be ground to photoreceptor.
It is mostly i.e. golden using the silica for being used to assign mobility and the polishing particles for assigning abrasiveness for ink powder
Belong to particle.Metallic is compared with silica, and resistance is relatively low and carried charge is relatively low, therefore, has and is easily taken off from ink powder particle
From characteristic, be not transferred to intermediate transfer belt in 1 transfer section but easily remain in photosensitive surface.Therefore, if figure
The lettering rate of picture is higher, then the ratio of the metallic in the ink powder being recovered in cleaner becomes higher.
The outside diameter of the metallic is 1/100 or so of ink powder particle, very small, therefore, can escape from cleaning blade, attachment
Charging system in downstream, promotes the pollution of Charging system.
In the colored machine of tandem, there is multiple photo-conductor units such as yellow, blue-green, reddish violet, black, but each color
Lettering rate mostly there are larger difference, therefore, each image forms station（In the following, referred to as " station "）Cleaning device in recycling ink
The ratio of metallic in powder produces difference, and difference easily occurs for the class of pollution of Charging system.
On the other hand, if the ratio of the metallic in recycling ink powder is relatively low, insulation breakdown easily occurs for photoreceptor.
That is, recycle ink powder in metallic have release electric charge effect, therefore, if recycling ink powder in metallic ratio compared with
Low, then ink powder can be excessively powered because of the friction in cleaning device, when being peeled off using cleaning blade from photoreceptor, to photoreceptor
Electric discharge, so that insulation breakdown easily occurs for photoreceptor.
Accordingly it is desirable to the ratio of the metallic recycled in ink powder is maintained into prescribed limit.In the past, such as such as patent text
Offer described in 1, by the way that the bias of the cleaning brush of intermediate transfer belt is set to OFF（Close）, so that the cleaning of intermediate transfer belt is shelved,
The ink powder remained in during intermediate transfer belt is rotated 1 time on intermediate transfer band is supplied to photoreceptor magnetic drum.
Prior art literature
Patent document
Patent document 1：Japanese Patent Laid-Open 2010-134320 publications.
The content of the invention
The technical problems to be solved by the invention
However, in patent document 1, action is implemented to be periodically that printing operation terminates afterwards or need to interrupt to print to move
Make to implement, accordingly, it is capable to the ink powder for being supplied to drum unit be only before printing operation in residue in intermediate transfer belt
Ink powder, there are the problem of be that getable effect is very little.
The present invention in view of above-mentioned point and complete, its purpose is to provide image processing system, it can will be in recycling ink powder
The ratio of metallic maintains prescribed limit, so as to suppress the pollution of Charging system and the insulation breakdown of photoreceptor.
Technical scheme applied to solve the technical problem
The image processing system of the present invention includes：Multiple photoreceptors；Contacted with each photoreceptor so that photoreceptor is powered
Charging system；The ink powder comprising the i.e. metallic of polishing particles is set to adhere to the developing apparatus that sub-image develops；And from
The cleaning device that the surface of the photoreceptor removes residual toner, the image processing system will be formed on the photoreceptor
The ink powder image of each color overlaps intermediate transfer and brings to form coloured image successively, it is characterised in that has 1 transfer bias
Control unit, according to before provide number of pages each color average lettering rate, by photoreceptor image formation when beyond 1 time turn
Print bias switches to identical or opposite with the powered polarity of ink powder.
Invention effect
According to the present invention, the ratio of polishing particles, that is, metallic in the recycling ink powder in cleaning device can be maintained
Prescribed limit.Accordingly, it is capable to the insulation breakdown of pollution and photoreceptor magnetic drum caused by the metallic of the Charging system at each station
Suppressed.
Brief description of the drawings
Fig. 1 is the brief configuration figure of the duplicator involved by embodiments of the present invention.
Fig. 2 is the sectional view for the structure for representing the drum unit involved by embodiment of the present invention.
Fig. 3 is an exemplary block diagram of the hardware configuration for representing the duplicator involved by embodiments of the present invention.
Fig. 4 is the flow chart for the control process for representing the duplicator involved by embodiments of the present invention.
Embodiment
In the following, it is based on attached drawing, the embodiment that the present invention will be described in detail.In addition, in the following, institute of the present invention is used as using duplicator
The image processing system that is related to illustrates.
Fig. 1 is the brief configuration figure of the duplicator P involved by embodiments of the present invention.
Duplicator（Image processing system）P includes：With paper discharge unit a；Toner cartridge incorporating section b；Image forming part c；And use
Carton portion d.In addition, in duplicator P, paper discharge unit a is used to superposed with carton portion d from positioned at lower part, is provided with
With paper transport unit e.In addition, in duplicator P, on the top with paper discharge unit a, equipped with the scanner section f for reading original copy.
It is configured to use word formed with regulation image with paper discharge unit a（Sheet material）Discharged via with paper transport unit e.The use
The inclined bottom surface of paper discharge unit a, so that when it is multipage that discharge is with paper, makes one end align and be laminated.
Toner cartridge incorporating section b is configured to storage powdered black ink（BK）Toner cartridge b1, Yellow ink powder（Y）Toner cartridge
B2, blue-green ink powder（C）Toner cartridge b3 and reddish violet ink powder（M）Toner cartridge b4.Moreover, each toner cartridge b1~b4 is configured to
Ink powder can be provided to the developing cell c2 of image forming part c.
Image forming part c includes laser scan unit c1, developing cell c2, drum unit c3, transfer printing unit c4 and is fixed
Unit c5.Developing cell c2 and drum unit c3 and toner cartridge b1~b4 is corresponded to be configured.
Laser scan unit c1 is identical with known laser scan unit, including：Produce laser light-beam generator, will be from
The light-beam generator irradiate come light beam be scanned polygon prism, be scanned by the polygon prism after light beam in photoreceptor
F θ lens being imaged on magnetic drum 1 etc..
Developing cell c2 to photoreceptor magnetic drum 1 by providing ink powder, the electrostatic latent image that the side face of photoreceptor magnetic drum 1 is formed
Develop, relative to the side face of photoreceptor magnetic drum 1, come relatively with photoreceptor magnetic drum 1 on the radial direction of photoreceptor magnetic drum 1
Configuration.
Drum unit c3 photoreceptors magnetic drum 1, the photoreceptor magnetic drum 1 are generated in its magnetic drum side face using laser scan unit c1
Electrostatic latent image, and form ink powder image using the ink powder of developing cell c2 is supplied to from toner cartridge incorporating section b.
Around photoreceptor magnetic drum 1, by the discharge lamp 2 to discharge after transfer its side face, after transfer by it
Side face the remaining ink powder cleaning device 3 removed and the Charging system 4 for making its side face become electriferous state before transfer, into
The opposite configuration of row.Discharge lamp 2, cleaning device 3 and the Charging system 4 of present embodiment are used as magnetic drum in the lump with photoreceptor magnetic drum 1
Unit c3, to carry out blocking so as to integrally freely mounting and dismounting.
Transfer printing unit c4 has：The intermediate transfer belt 5 of ink powder image is transferred from photoreceptor magnetic drum 1, across intermediate transfer belt 5
With photoreceptor magnetic drum 12 transfers are carried out come 1 transfer roll 6 configured, the ink powder image for being transferred intermediate transfer belt 5 relatively
2 transfer rolls 7,8, clean cleaning brush 9 is carried out to intermediate transfer belt 5.Via transmitting defined piece with paper transport unit e
Material, for example with paper when, secondary transfer roller 7,8 is rotated in the state of being clipped in the middle with intermediate transfer belt 5, thus to paper into
2 transfers of row, can be sent to fixation unit c5 sides by this with paper.
Being provided with the position of transfer printing unit c4, side is carried out with a part of paper transport unit e fixation unit c5 farther downstream
Set, formed by this can be clamped with a pair of rolls configured with the mode of paper transmitted in paper transport unit e.Moreover, fixation unit
C5 is pressurizeed and is heated using a pair of rolls, thus by transfer printing unit c4 be transferred to the ink powder image on paper be fixed in
Paper.
With carton portion d be by can freely from apparatus main body extract out in a manner of the paper feeding cassette that sets.Moreover, with carton portion d
It is configured to from paper feeding cassette to paper transport unit e offer paper one by one.
Set with carton portion e across from positioned at lower part with carton portion d to superposed with paper discharge unit a, by more
A transfer roller and directing plate are formed.Moreover, this is configured to be opened with paper one from what is provided with carton portion d with paper transport unit e
Transmitted to paper discharge unit a on one ground.
In duplicator P with said structure, irradiation and view data pair from laser scan unit c1 to photoreceptor magnetic drum 1
The laser answered is developed ink powder image using the ink powder provided so as to form electrostatic latent image.Moreover, by transfer printing unit
The ink powder image being loaded with the photoreceptor magnetic drum 1 is transferred to paper by c4, afterwards, is pressurizeed and is added using fixation unit c5
Heat, so as to carry out fixing processing.Finally, it is printed with being expelled to paper with paper discharge unit a for image.
Fig. 2 is the sectional view for the structure for representing drum unit c3.In drum unit c3, around photoreceptor magnetic drum 1,
2, cleaning device 3 and the Charging systems 4 such as electric discharge are configured with a manner of opposite with photoreceptor magnetic drum 1.Discharge lamp 2 is, for example, to shine
Diode（LED）.
Drum unit c3 has the unit framework main body 10 for keeping photoreceptor magnetic drum 1.Unit framework main body 10 be configured to by
Photoreceptor magnetic drum 1, cleaning device 3 and Charging system 4 carry out integral holding.Cleaning device 3 is configured in the side of photoreceptor magnetic drum 1
Side, Charging system 4 are configured in the lower section of photoreceptor magnetic drum 1.
Cleaning device 3, photoreceptor magnetic drum 1, Charging system 4 are as drum unit c3（Image carrier unit）It is integrally formed.
Drum unit c3 is in left and right directions（The direction orthogonal with the paper of Fig. 2）Both ends, possess a pair of sidewalls (not shown)（Supporting
Body）.Using a pair of side plates, photoreceptor magnetic drum 1 is supported in a manner of revolvable.In addition, using above-mentioned a pair of side plates, by band
Electric installation 4 and cleaning device 3 are supported with opposite with photoreceptor magnetic drum 1.
Cleaning device 3 includes cleaning blade 31, transmission screw 32 and mixing roll 33, the photoreceptor after being transferred to ink powder image
Ink powder accompanying by the side face of magnetic drum 1 is cleaned, and the ink powder is sent to retracting device (not shown).
Cleaning blade 31 is by elastomeric material（Polyurethane rubber）The tabular component of composition.Knife will be cleaned using blade holder 34
Piece 31 is supported on unit framework main body 10.Blade holder 34 is the sheet-metal component for having in above-mentioned sectional view L-shaped shape.Utilize
Cleaning blade 31 and blade holder 34 are fixed bonding agent.As a result, form the fixing end of cleaning blade 31.The opposing party
Face, the front end of cleaning blade 31 is free end, is abutted against with the side face of photoreceptor magnetic drum 1.The above-mentioned front end phase of cleaning blade 31
Than mixing roll 33 described later, with more leaning on the barrel surface in direction of rotation downstream of photoreceptor magnetic drum 1 to abut against.It is as a result, sharp
With the above-mentioned front end of cleaning blade 31, will be remained on the side face of photoreceptor magnetic drum 1（Attachment）Ink powder remove.
Transmission screw 32 is supported on cleaning housing in the top of cleaning blade 31 in a manner of revolvable.Transmission screw 32 wraps
Include axle portion, the spiral helicine vane member being configured at around the axle portion.Transmission screw 32 is driven by cleaning blade 31, will be accumulated
Transmitted in the recycling ink powder on cleaning blade 31 along the axial direction of the shaft of photoreceptor magnetic drum 1.
Mixing roll 33 is configured at the rear of transmission screw 32.Mixing roll 33 is the rubber that surface has carried out roughened processing
Roller.Mixing roll 33 and the surface of photoreceptor magnetic drum 1 abut against, and follow photoreceptor magnetic drum 1 and rotate.Mixing roll 33 will attach to
The ink powder of the barrel surface of photoreceptor magnetic drum 1 is recycled.In addition, mixing roll 33 puts the surface for being attached to photoreceptor magnetic drum 1
The attachments such as thing are electrically generated to be ground.At this time, the side face of mixing roll 33 is attached with the template of ormal weight, so that above-mentioned electric discharge is given birth to
Into the removal capacity of thing（Grind performance）It is improved.
Charging system 4 includes charged roller 41, clearer 42.Charged roller 41 is the roller component that surface is made of elastomeric material.
Not shown bias applying unit applies electrified voltage to charged roller 41.Charged roller 41 and the side face of photoreceptor magnetic drum 1 abut against,
And follow photoreceptor magnetic drum 1 and rotate.Using the charged roller 41 for being applied with electrified voltage, make the side face of photoreceptor magnetic drum 1 uniform
Ground is powered.
Clearer 42 is abutted against with charged roller 41, and there are linear speed difference between clearer 42 and charged roller 41 to be rotated.
Clearer 42 is the brush roll to be formed by electric conductivity nylon fiber.Since charged roller 41 and the surface of photoreceptor magnetic drum 1 abut against,
Therefore, ink powder, foreign matter etc. can be adhered on the surface of charged roller 41.In addition, electrified voltage is put on charged roller 41, with it is photosensitive
The position that body magnetic drum 1 abuts produces electric discharge, therefore, has discharge product in the surface attachment of charged roller 41.Clearer 42 and band
Electric roller 41 is contacted and rotated with linear speed difference, so as to suitably remove the ink powder on the surface for being attached to charged roller 41,
Foreign matter etc..
（The hardware configuration of duplicator P）
Then, based on Fig. 3, the hardware configuration of the duplicator P involved by embodiments of the present invention is illustrated.Fig. 3
It is an exemplary block diagram of the hardware configuration for representing duplicator P.
As shown in figure 3, the duplicator P involved by present embodiment has control unit 90, operation portion 80, image input unit
70th, high voltage power supply portion 50, exposure device 11, fixing device 12, image forming part c etc..
Control unit 90 includes CPU（Central processing unit）91st, specific store portion, that is, ROM is read（Read-only storage）92nd, read
It is written from by storage part i.e. RAM（Random access memory）93rd, the temporary storage part 94 of temporarily storing image data etc., counter 95, to
Each device in duplicator P sends control signal or receives the multiple of input signal from operation portion 80（It is 2 herein）I/F（Connect
Mouthful）96th, it is controlled the operational part 97 of the calculation process of required numerical value.In addition, control unit 90 is configured in apparatus main body
Any part in portion.
In addition, control unit 90 sends control signal by I/F96 from each several part from CPU91 to duplicator P, device.In addition,
Expression each several part, the signal of the state of device, input signal are sent from each several part, device by I/F96 to CPU91.As
The each several part that control unit 90 controls, can enumerate such as image forming part c, high voltage power supply portion 50, exposure device 11, fixing device
12nd, operation portion 80 etc..
CPU91 is central operation processing unit, the control program based on expansion, carry out each portion of duplicator P control and
Computing.ROM92 is accommodated with the use of the duplicator P of the control program of duplicator P, numerical value required in control etc. without becoming
Data more etc..RAM93 be stored with duplicator P control midway produce necessary data, the control of duplicator P it is temporarily required
Data etc..In addition, RAM93（Or ROM92）Storage has number of print pages of trigger as cleaning action etc..Counter 95 is tired
Meter number of print pages is simultaneously counted.
The view data that operational part 97 is stored based on temporary storage part 94, calculates the lettering rate and regulation number of pages of image
The average lettering rate of image.In present embodiment, operational part 97 is according to the picture number formed on photoreceptor magnetic drum of page 100 before
According to calculate the average lettering rate of every page.In addition, so-called average lettering rate is to represent to form the region area of image and use
The index of the ratio between paper entire area.
There is powered biasing portion 51, the transfer bias control portion 53,2 times of developing bias portion 52,1 times to transfer in high voltage power supply portion 50
Biasing portion 54, I/F（Interface）56.Powered biasing portion 51 is according to the output signal from control unit 90, to the powered of Charging system 4
Roller 41（With reference to Fig. 2）Apply（Output）Defined bias.Developing bias portion 52 is according to the output signal from control unit 90, Xiang Xian
The developer roll of image device 21 applies（Output）Defined bias.1 transfer bias control portion 53 is according to from the defeated of control unit 90
Go out signal, switch to it is identical with the powered polarity of ink powder or on the contrary, so as to 1 transfer device 22 1 transfer roll 6（With reference to figure
1）Apply（Output）Defined bias.2 transfer bias portions 54 are according to the output signal from control unit 90, to 2 transfer dresses
Put 23 2 transfer rolls 7,8（With reference to Fig. 1）Apply（Output）Defined bias.
Image input unit 70 is that the receiving division of duplicator P will be received by the view data of the transmissions such as personal computer.By
After the picture signal that image input unit 70 inputs is converted into digital signal, temporary storage part 94 is passed out to.
Operation portion 80 is equipped with liquid crystal display part 81, input button 82, LED83.Liquid crystal display part 81 and LED83 represent to duplicate
The state of machine P, and show that image forms situation, printing number.Duplicator P is carried out by the printer driver of personal computer
Various settings.
In addition, operation portion 80 be equipped with stop image formation when etc. use pause/removing button, by duplicator P's
Various reset button for being set to use during default conditions etc..
Fig. 4 is the flow chart for the control process for representing the duplicator P involved by embodiments of the present invention.
Start the printing operation of duplicator P by print command（Step S1）, judge that the lettering rate of each color is labeled as
" height " still " low "（Step S2）.In addition, setting product export state i.e. original state as " low ", after printing page 1, utilization is following
Step S7 " before the average lettering rate of page 100 be more than 10%" this condition, to determine " height " still " low ", at any time
It is updated.
In the case that lettering rate is labeled as " height "（Step S2 is yes）, by image shape in 1 transfer bias control portion 53
Into when beyond 1 transfer bias be switched to powered opposite polarity polarity with ink powder（Step S3）.In the present embodiment,
1 transfer bias beyond during image formation refer to blank parts between blank parts before image, image and image, with
And 1 transfer bias of the blank parts after image.
If lettering rate is higher, the ratio for recycling polishing particles, that is, metallic in ink powder becomes higher, therefore Charging system 4
Easily pollution.It is stirred in metallic device in cleaning device, so that the electricity of its band and ink powder identical polar.In
It is, by the way that 1 transfer bias of the charging polarity of opposite polarity with ink powder is put on 1 transfer roll 6, so as to suppress metal
Pollution of the particle to Charging system 4.
On the other hand, in the case where the lettering rate mark of each color is not " height "（The situation of " low "）（Step S2 is
It is no）, when 1 transfer bias control portion 53 forms image beyond 1 transfer bias be set to powered polarity phase with ink powder
Same polarity（Step S4）.
If lettering rate is relatively low, the ratio for recycling polishing particles, that is, metallic in ink powder is lower.Recycle in ink powder
Metallic has the effect of release electric charge, and therefore, if the metallic ratio in recycling ink powder is relatively low, ink powder can be because of cleaning
Friction in device 3 and it is excessively powered, when being peeled off using cleaning blade 31 from photoreceptor, discharge to photoreceptor magnetic drum 1 so that
Insulation breakdown easily occurs for photoreceptor magnetic drum 1.Then, by by 1 transfer bias of the powered polarity identical polar with ink powder
1 transfer roll 6 is put on, so that the ratio of the metallic in the recycling ink powder in cleaning device 3 rises.Accordingly, it is capable to press down
The insulation breakdown of photoreceptor magnetic drum 1 processed.
Afterwards, if printing page 1（Step S5）, then the lettering rate of each color in page 1 is calculated using operational part 97（Step
S6）, whether before each color page 100 of average lettering rates are judged more than 10%（Step S7）.In addition, accumulative
Number of print pages be discontented with page 100 in the case of, also average lettering rate can be calculated according to the number of print pages untill current.
In the case that if average lettering rate is more than 10%（Step S7 is yes）, the lettering rate of each color, which marks, to be set to " height "
（Step S8）.
On the other hand, if average lettering rate not more than 10% in the case of（Step S7 is no）, the lettering rate of each color
Mark is set to " low "（Step S9）.
Then, to whether also needing printing to judge after nextpage（Step S10）, in the case that nextpage also needs printing later
（Step S10 is yes）, back to step S2.On the other hand, in the case of after nextpage without printing（Step S10 is
It is no）, terminate printing operation（Step S11）.
By above step, the ratio of the metallic in the cleaning device at each station can be maintained prescribed limit.Therefore,
The insulation breakdown of pollution and photoconductor drum caused by the external additive for the Charging system that can suppress each station.
In the present embodiment, whether it is more than 10% to be sentenced to before page 100 of average lettering rates in step S7
It is disconnected, but not limited to this, start successively to be ranked up photoreceptor magnetic drum with the average high person of lettering rate of regulation number of pages before, from by
High to Low order is at least one（Such as 1）Photoreceptor magnetic drum similarly carries out the later processing of step S8.In this situation
Under, it can more accurately control the metallic ratio in the cleaning device at each station.
In addition, in the present embodiment, photoreceptor magnetic drum 1 can be made of non-crystalline silicon, can also be made of OPC,
But preferably non-crystalline silicon is made.
It will be understood that all the elements of embodiment of disclosure are illustrative for not for limitation.The model of the present invention
It not is to be represented by described above to enclose, but by the Range Representation of claim, moreover, comprising equal with the scope of claim
Meaning and scope in had altered.
Practicality in industry
The image processing system of the present invention is applicable to such as duplicator, printer, facsimile machine.
Claims (4)
1. a kind of image processing system, including：
Multiple photoreceptors；
Contacted with each photoreceptor so that the powered Charging system of photoreceptor；
The ink powder comprising the i.e. metallic of polishing particles is set to adhere to the developing apparatus that sub-image develops；And
The cleaning device for removing residual toner from the surface of the photoreceptor,
The ink powder image for each color that the image processing system will be formed on the photoreceptor overlaps intermediate transfer belt successively
To form coloured image, it is characterised in that there is 1 transfer bias control portion,
The average lettering rate of 1 transfer bias control portion each color of regulation number of pages before, by the image on photoreceptor
1 transfer bias beyond during formation switch to it is identical with the powered polarity of ink powder or on the contrary, image formation when beyond 1 time turn
Print bias the blank parts between the blank parts before being image, image and image and the blank parts after image 1 time
Transfer bias.
2. image processing system as claimed in claim 1, it is characterised in that
For regulation number of pages before average lettering rate higher than regulation lettering rate photoreceptor, when image is formed beyond 1
Secondary transfer bias switches to the powered opposite polarity polarity with ink powder,
Less than the photoreceptor of regulation lettering rate, make the polarity of 1 transfer bias identical with the powered polarity of ink powder.
3. image processing system as claimed in claim 1, it is characterised in that
For at least one photoreceptor in the average lettering rate photoreceptor from high to low of regulation number of pages before, by image shape
Into when beyond 1 transfer bias switch to powered opposite polarity polarity with ink powder,
For other average lettering rates photoreceptors lower than at least one photoreceptor, when forming image beyond 1 transfer it is inclined
The polarity of pressure is identical with the powered polarity of ink powder.
4. image processing system as claimed in claim 1, it is characterised in that
The photoreceptor is made of non-crystalline silicon.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014127823 | 2014-06-23 | ||
| JP2014-127823 | 2014-06-23 | ||
| PCT/JP2015/062292 WO2015198705A1 (en) | 2014-06-23 | 2015-04-22 | Image forming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105452967A CN105452967A (en) | 2016-03-30 |
| CN105452967B true CN105452967B (en) | 2018-05-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580000392.4A Expired - Fee Related CN105452967B (en) | 2014-06-23 | 2015-04-22 | Image processing system |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9417567B1 (en) |
| JP (1) | JP5997847B2 (en) |
| CN (1) | CN105452967B (en) |
| WO (1) | WO2015198705A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019035811A (en) * | 2017-08-10 | 2019-03-07 | 株式会社東芝 | Image forming apparatus and image formation method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135425A (en) * | 2011-12-01 | 2013-06-05 | 夏普株式会社 | Image forming apparatus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2872121B2 (en) * | 1996-07-08 | 1999-03-17 | 新潟日本電気株式会社 | Image forming apparatus and transfer method |
| JP3604000B2 (en) * | 1999-02-22 | 2004-12-22 | 京セラ株式会社 | Image forming method and image forming apparatus |
| DE10007885B4 (en) | 1999-02-22 | 2016-08-18 | Kyocera Corp. | Image forming method and image forming apparatus |
| US6636708B2 (en) | 2001-08-21 | 2003-10-21 | Kabushiki Kaisha Toshiba | Image forming apparatus and system with a transfer device having an adjustable transfer bias |
| JP4208537B2 (en) * | 2002-09-24 | 2009-01-14 | キヤノン株式会社 | Image forming apparatus |
| JP4863520B2 (en) * | 2008-05-23 | 2012-01-25 | コニカミノルタビジネステクノロジーズ株式会社 | Transfer device, image forming apparatus, and control method of transfer device |
| JP5070191B2 (en) | 2008-12-08 | 2012-11-07 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
| JP2014178376A (en) | 2013-03-13 | 2014-09-25 | Ricoh Co Ltd | Image forming apparatus |
-
2015
- 2015-04-22 JP JP2015543620A patent/JP5997847B2/en not_active Expired - Fee Related
- 2015-04-22 CN CN201580000392.4A patent/CN105452967B/en not_active Expired - Fee Related
- 2015-04-22 WO PCT/JP2015/062292 patent/WO2015198705A1/en active Application Filing
- 2015-04-22 US US14/775,756 patent/US9417567B1/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135425A (en) * | 2011-12-01 | 2013-06-05 | 夏普株式会社 | Image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5997847B2 (en) | 2016-09-28 |
| US9417567B1 (en) | 2016-08-16 |
| JPWO2015198705A1 (en) | 2017-04-20 |
| WO2015198705A1 (en) | 2015-12-30 |
| CN105452967A (en) | 2016-03-30 |
| US20160216651A1 (en) | 2016-07-28 |
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